In a large bowl combine the water and starter. Mix.
Add the flour and salt. Mix until a shaggy dough forms (no dry flour left).
Cover and let rest for 30 minutes.
Stretch and fold and gently knead. Cover and let rest 30 minutes.
Repeat this process until you have completed 8 stretch and folds (approximately 4 hours).
Cover and let rise 1-2 hours, until about doubled in size.
Lightly flour surface. Gently remove the dough from the bowl and shape into a ball, pulling toards you to create surface tension (see video). Don't overwork the dough.
Place in a floured banneton basket or tea towel-lined collander upside down (top of dough goes in first). Seal bottom of the dough so there are no holes.
Cover and place in the refrigerator to ferment for 1-3 hours.
30 minutes before baking place a Dutch oven in the oven at 450 degrees F to preheat.
Gently flip dough onto parchment paper or a bread sling. Score if desired.
Place dough (on the parchment or slng) into the hot Dutch oven. Cover and bake for 30 minutes.
Reduce heat to 425 degrees F and remove the lid from the Dutch oven. Continue baking for 20 minutes, or until desired darkness and crust.
Remove the bread from the Dutch oven and allow to cool on a cooling rack. Cook completely before slicing.
Store cooled bread in a sealed bread bag or bread box.